The work of Cavalieri and Barrow provided the groundwork for this field of study. George Berkley attacked the central idea behind this subject saying "may we not call them the Ghosts of departed Quantities?" One pioneer of this field called it "the method of fluxions." One developer of this was Gottfried Leibniz. The other 
The work of Cavalieri and Barrow provided the groundwork for this field of study. George Berkley attacked the central idea behind this subject saying "may we not call them the Ghosts of departed Quantities?" One pioneer of this field called it "the method of fluxions." One developer of this was Gottfried Leibniz. The other person who discovered this mathematical subject was Sir Isaac Newton. For 10 points, name this branch of mathematics involving the taking of integrals and derivatives.
The work of Cavalieri and Barrow provided the groundwork for this field of study.
infinitesimal {calculus} [prompt on math]